下面是一个脚本片段，该脚本生成具有用户选择长度的随机密码。我已经让脚本作为一个图形用户界面完美运行。
我想添加一些额外的功能，在脚本的底部是一些用户信息The passwords generated by this application are very strong, here is an example of the strength you can achieve by using this application;
Length of Password:
$newnumber
Character Combinations:
${#matrix}
Calculations Per Second:
4 billion
Possible Combinations: 2 vigintillion
Based on an average Desktop PC making about 4 Billion calculations per second it would take about 21 quattuordecillion years to crack your password.As a number that's 21,454,815,022,336,020,000,000,000,000,000,000,000,000,000,000 years!"
我怎么才能让巴什计算出
`21 quattuordecillion years`
从
Length of Password:
$newnumber
Character Combinations:
${#matrix}
Calculations Per Second:
4 billion
Possible Combinations: 2 vigintillion
最佳答案
从bash进行数学计算的一个简单方法是使用bc命令行计算器。
下面是如何从bash脚本调用它：
answer=$(bc << LIMIT_STRING
your math operations here
LIMIT_STRING
)
关于linux - 在bash脚本中进行数学运算，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/25516852/